What were the youngest soldiers in the Civil War?

The Youngest surviving soldier at the end of the US Civil War was Andrew 'Jackson' Botts. He was the 13 years old. Known as the 'Little Drummer Boy,' he joined the Civil war when he was 12 1/2 years old. There were other soldiers who were as young as or younger when they joined, but Andrew Jackson Botts was the only 13 year old soldier at the end of the war.